Device for regulating pressure in machine rollers



G. BABICZ Aug. 7, 1945.

DEVICE FOR REGULATING PRESSURE IN MACHINE RoLLERs Filed April 29, 1943IN V EN TOR. 560C963 fidb Patented Aug. 7, 1945 UNIT D'STATEs P -Ts rDEVICE FOR REGULATING PRESSURE IN MACHINE ROLLERS V George Babicz,Chicago, Ill. Application April 29, 1943, Serial No. 484,997 2 Claims(01. 101--351) Broadly the present invention relates to means forregulating, that is for increasing for clecreasing, the pressurebetween. a plurality of rollers in various types of machines. I

More specifically the present invention relates to the printing machinesand has for its object the provision of a device whereby the pressurebetween fountain roller and ink spreading roller may be regulated withthe greatest degree of accuracy and precision.

A still further object of the present invention is the provision ofmeans in a printing machine to bodily move the fountain roller to oraway from the printing roller thereby increasing or decreasing thepressure therebetween and as a consequence transferring lesser or largeramountr of ink, as may be desirable, from the fountain roller to theprinting roller.

With the above, general objects in view and others that will appear asthe invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts hereinafter morefully described, illustrated in a part of this applicarefer tocorresponding parts throughout the several views I Fig. 1 is across-sectional view on a vertical plane through a plurality of shafts,supporting a plurality of rollers, with rollers shown in: ele-' vationand in a cooperating position;

I 4, l6 and I! rotate into the directions indicated by arrows inFig. 1.Roller'lfi' is adapted to carry upon itsv periphery printing impressionswhich, when inked ,by. roller ID, are transferred upon the paper whenthesame isfed. and moves between said rollers It and 11.

, It is desirable to regulate the pressure between I rollers l0 and M inorder to regulate the ink film upon roller In for the purpose oftransferring ink therefrom to roller [6 in a lesser or larger degree,asmaybe desirable and dependentupon the various factors, such: as thequality of paper .which is being printed or. the nature, qualityofconsistency of the ink in trough l2. This object is accomplished bymeans of a pressure regulating devices, each set, upon standards 20,which directly carry shafts l8 andiq.v This. device includes a pair ofvspaced guiding rails 2|, set upon the inner faces of standards ,Zllanddisposed transversely thereof, with1 one ends, projecting beyond theadjacent marginal edgeflof standards Said rails are affixed tostandardsilhby means of screws22, and constitute guidingi me'ans bars25. a

for 'plate 23, one receivable within each pair of said guiding rails 2l.One end of plate 23 is cut out longitudinallyand centrally thereof for.defining slot 24, with the resultant pair of edge I Toprevent lateralshifting of plate23 an'dbars 2.5, both are grooved as at 26 to receivetherewithflin correspondingly shaped flanges 21,. by virtue Fig. 2 is aside elevational view of the present I device and transversely of,roller-supporting shafts; and a t 7 Fig. 3 is anend view of a pair ofshaft-supporting and pressure regulating devices, one being shown inelevation and the other in cross-section. Referring in detail to thepresent drawing, the same illustrates a relative juxtaposition ofaplurality of rollers, including a fountain roller Ill,

which is partly immersed in ink II contained in trough [2. Roller I0 isset upon shaft l3; Ink spreading'roller l4 set upon shaft I5 is in ahorizontal relative position with roller l0 and contacts therewith forthe purpose of wiping off the excess ink upon roller 10 and uniformlyspreadupon shafts l8 and I9, respectively. Rollers I0,

of which arrangement plate 23Qand bars 25 :are retained within guidingrails- 21, but are permitted to make longitudinal sliding movement.

Bearings 28, which support shaft'l5 atboth of its ends, are set. withinslots and between bars 25. At; the outerends ofv bearings 28' arms 29upwardly project and are pivoted j for :angular shifting movementuponpivots'30 carried by the upper bars 25. Arms '29 have horizontalextensions 3|, thelatter carrying upwaridly pro- J'ecting arms 32,thelatter being laterally bent .and .having their free ends bifurcatedas at 33.

Journaled within said bifurcated ends 33 of arms 32, as at 34 are rods35. The opposite ends ofsaid rods are threadedto'receive a nut lock- 36,The threaded end portion of each rod ,35 rests within the bifurcated endof bar. 31 andlis there held and roller I4 is indicated by dotted linesupon Fig. 2.

Bearings 40, within which shaft I3 is set for rotation, are integrallyformed with the two oppositely disposed plates 23.

Plate 23, longitudinally and centrally thereof and on its edge borderingslot 24 is provided with 1 socket 4| to receive therewithin a coilspring 42, which z bearsaagainststhe side cf bearing 28 and normallyurges the 'same away from that-edge of plate 23. Thus when nut lock 36is released,

that is when its contactual engagement with ba'r' 31 is loosened, spring42 automatically shiftsbear ing 28 away from bearing '40, causingiangiilar '15 Hi to or away from printing roller I5 and regushifting ofarm 29, upon pivot 30, as wll as arm 32 towards said bar 31, therebydecreasing the pressure between the two rollers 40 and J4 Thereupon wingnut 38 is adjusted so as to main tain rods 35 in a rigid adjustedposition'with respect to bar 3.1, which.in turn will maintain.thetworollers' l and M in a 'rigi'd,irelatively adjjusted'position. 'Toreverse'the operation and shitting'ef bearings 28,"that:is forbringing'roller f4 "towards .roller T0 to increase the ,pressure"therebetween, nut -38 is .loosened, r'o'di35 is shiited intothezopposite directiomithat isxaway "from bar 331, which operation;"shifts bearings ",28 towards bearings "4llpan'd against the tension"6f springs 42,1and' when" the desiredfpressure between rollers f0 and"I4 .was "brought about nut loelf36is .screwe'd .upon 'rdd3 "and towards-wing "nut.38 for the purpose 'o'f'ilockin .ro'd'35 .to .bar"3]iin1'the" newly adjusted relative position 'with i'respect to bar 31.C'I'hisoperationnf rods35' shifts 't' bearings"28 and 'roller Mitowardsro1ler"l 0, and

against the Ztension oftco'il. spring 42, and .increases the pressurebetween" said rollers.

'"Fromflthe hereina'bove description it wil "be seen! that'the excessamount ofdnk .taken up by :rdller f0 will 'be' wipedoffi therefrom asthe'sa'me "rotatespastfrollen f4. Jls" the"pressur.e:between thetwo'rollers .is':increased, the amount. of coating "offiinkiupon' roller'llfl.'is .decreased. 'LInkfin turn istrans'ferred'from' roller t0to'Jthe; printingf'dies upon roller ilii, vtobe"ini turnttran's'ferredzto the 'jpaper passing betweenrollersds and I1 'as'afore-"said. a

.It is oftentimes desirable to regulate"the;.pres- "sure betweenfountain 'roller "f0 and printing "roller" l6. 'IForthispurposenneanshas beenpro- "vided" whereby'riiller I |'0,"roller"l 4an'd' plates "23 may be rbodily "moved on :hor'izontal "plane, "for thepurpose offbringing"fountainfroller 1'0 to "or (away "from, printingroller [6. "This means in- "cludes af'horizontalbarfl 3inte'grally'tonnedwith "and j horizontally projecting from the marginaledge of each standard 20, andbelow the Tower- 'most "guiding rail 2 I."Each of'sai'dbars *4 3 has an 'upwardly "projecting 'vertical*bifurcated extensionfl; which isin alinement' with'fplate"23 6"andin'iront of its adjacentwertical edge. Screw "4'5rigidlyafflxedtoyplate' 23 carries nut lock -Mi "contacting"with*one"face of the "bifurcated end of extension 44. Wingnut "=41completes "the "structure. By"shifting nut lock 46 an'd-wing'nut rollersI0 and [4, with the entire mechanism for increasing the pressuretherebetween, and hereinabove described, are likewise bodily shifted,without in any manner disturbing the contactual 6 adjusted relation andpressure between rollers I0 and I 4. As hereinabove indicated guidingrails 2| by virtue of their flanges 21 permit 1ongitudinal slidingmovement of plate 23 and bars 125, "preventing however any il ateralshifting -*-thereof. r I i l As is seen in Fig. 1 printing roller l6remains Ito the side of the vertical transverse axis of inkv.ing roller'10,, which juxtaposition of the two ,irollers makes it possible toshift inking roller :,late :the contactual pressure therebetween bymeans last hereinbove described. 'While'there is described herein apreferred .zembo'diment of the present invention, it is nevertheless to.be understood that minorchangesimay "*be"made therein without departingfrom the "spirit: and sc0pe 'of the-invention as claimed. WhatI'claim'asnew is: p

1. The combinatiorrina'printing'm'achine hav- "ing aframe, a printingroller; and hiking rollers including 'a'n] ink "applying roller "and anink -'sprea'ding roller' associated with'the ink applying rollerpo'f 1adjusting means for the ink applying roller and t-he ink spreading*rollerflcompris- .30 ing spaced pairs of cooperating guide railsmounted on i the f raine, a slotted plate slidably "supported betweeneach "pair of guide rails and 'adjustably connected with the 'frame, andsaid plates forming a'*bearing forthe ink applying a bearing on 3 eachlever set in the slot "of Y the p'late and carrying the inkspreadingroller, a

, spring engaging each bearing and plate, and

' an adjust-ing rod-pivoted to each bell crank lever 'aton'e "end-andsup erted from-the plate at the other end for" pivoting the'respe'ctivebell crank levers to adjust"thebearings and inkspreading roller withu'espectto the ink applying roller.

' 2. The'-=combination in a printing machine having a frame, a printingrollenan'd inking roll- "spreading "roller' associated"*with the inkapplying Tene -er adjusting meansfor the inkapp'lying roller andtheinkspreading rel-ler, comprisang spaced pairs of ff-cooperating guideTails mounted on' the rram pa plate having a"-bifur- --cated 'en'd "partforming -'space'd "parallel arms, one of salid"pl-atesslidably"supported between each: pair 6f'guide rafls, a bav'iormedwithan ""extension-carried-'on*the frame back of *each plate, anadjusting member carried by theextension of each bar and connected withthe plate "adJacer'it-thereto toadju'st the same, and said platesfor-ming "a "bearing 7 for the ink applying roller, a bell 'crank 1everpivotedto h each plate, =a bearing carried by each lever 'an'd"disposedbetween the arms-formed by thebifurcated end 1 I ofits adj acentplate,'- said latter bearingscarrying. the ink spreading roller, 1 aspring engaging each bearing and-pl-'ate,' anjdan adjusting:rod-pivotewto each bell crank'qlever at one' e'n'dand :su'ppdrte'd fromf the plate at the ether "end for pivotin'g' the respective bell crank'levers to ad- "just "the bearings and' ink spreading "roller with 1respect" to the ink applying roller.

GEORGE'BABICZ.

